淋巴瘤IIb临床分期的含义
参考答案：病变侵犯横膈同侧的2个或更多的淋巴结区（II）
混凝土坍落度试验时，坍落度筒的提离过程要求在( )内完成。
A．3～5s
B．5～8s
C．5～10s
D．8～12s
The book I bought from the bookstore isn’t here. Who __________?
A．could have taken it
B．must have taken it
C．might take it
D．should take it.
